#! /usr/bin/env python
# coding: utf-8

import string,cgi,time
from os import curdir, sep

from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer

class MyHandler(BaseHTTPRequestHandler):
    index=0
    lastport=None
    suspicious=[]

    def do_GET(self):
        return

    def do_POST(self):
        global postVars
        varLen = int(self.headers['Content-Length'])
        postVars = self.rfile.read(varLen)
        self.send_response(200)
        self.send_header('Content-type','text/plain')
        self.end_headers()
        print self.client_address
        host,port=self.client_address
        self.wfile.write("POST OK\n");
        self.wfile.write("Data: "+str(postVars));

        if (self.lastport is not None):
            portdiff=port-MyHandler.lastport
        else:
            portdiff=0

        #if (self.index is None): self.index=0;

        with open("log.txt","a") as myfile:
            myfile.write(str(self.index)+" ("+str(portdiff)+") "+str(postVars)+"\n");

        if (portdiff!=4): #the number here depends on the chunk
            MyHandler.suspicious.append(MyHandler.index);
            MyHandler.index+=1;
            MyHandler.lastport=port
        return

def main():
    try:
        server = HTTPServer(("", 9000), MyHandler)
        print 'started httpserver'
        server.serve_forever()
    except KeyboardInterrupt:
        print '^C received, shutting down server'
        print "Suspicious list:\n"
        print MyHandler.suspicious
        server.socket.close()
if __name__ == '__main__':
        main()